Chiwaridzo, M., Chikasha, T. N., Naidoo, N., Dambi, J. M., Tadyanemhandu, C., Munambah, N. and Chizanga, P. T. (2017) “Content validity and test-retest reliability of a low back pain questionnaire in Zimbabwean adolescents”, Archives of Physiotherapy, 7(1). doi: 10.1186/s40945-017-0031-y.